How's Snape Doing it?

[smaragdina5]

No: HPFGUIDX 89731

--- In HPforGrownups at yahoogroups.com, "capehoneysuckle" 
<capehoneysuckle at e...> wrote:
> lizvega2 gave a brilliant theory proposing that Snape is spying on 
LV
> by means of impersonating Crouch Jr via polyjuice potion.
> 
> Carol responded:
> > The main problem I see with this interesting theory is that the
> > effects of the polyjuice potion only last an hour. 
> 
> Carol's first argument against the Snape/Crouch/Polyjuice Theory is
> pretty convincing. LV might be so thankful to have his number one DE
> back that he isn't paying close attention, but he would still 
probably
> eventually pick up on the imposter constantly excusing himself to 
slug
> down a booster dose of PJ.

Unless this is the answer to the metamorphmagus clue... 

Betta smaragdina